Restricted Stock Units (Tables) - Restricted Stock Units (RSUs)

3 Months Ended

Mar. 31, 2019

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of Restricted Stock Units Activity

A summary of unvested restricted stock units (“RSUs”) outstanding as of, and changes made during, the three months ended March 31, 2019, is presented below:

	RSUs		Weighted Average Grant Price
Unvested restricted stock units outstanding, December 31, 2018	503,511		$	1.94
Granted	52,976		1.31
Vested	(16,826	)	8.37
Forfeited	(267	)	1.31
Unvested restricted stock units outstanding, March 31, 2019	539,394		$	1.68

Summary of Compensation Expense

Stock-based compensation expense related to RSUs is allocated as follows (in thousands):

	Three Months Ended
	March 31,
	2019		2018
Cost of revenue	$	4	$	5
Research and development	4		10
Sales and marketing	—		2
General and administrative	19		23
	$	27	$	40